<!--课程设置侧边栏-->
<ul class="list-group">
    <li class="list-group-heading">我的教学</li>
    <li class="list-group-item ${addCourse}">
        <a href="courseInfo">课程信息</a>
    </li>
    <li class="list-group-item ${tasks}">
        <a href="tasks">任务计划</a>
    </li>
    <li class="list-group-item ${practice}">
        <a href="practice">习题列表</a>
    </li>
    <li class="list-group-item ${testpaper}">
        <a href="testpaper">试题列表</a>
    </li>
    <li class="list-group-item ${material}">
        <a href="material">资料管理</a>
    </li>
    <li class="list-group-item ${files}">
        <a href="files">文件管理</a>
    </li>
</ul>
